Patents by Inventor Mamoru Hosoya

Mamoru Hosoya has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20110195330
    Abstract: Provided is a fuel cell capable of stopping, during abnormal heat generation, a supply of fuel and/or air, and preventing additional abnormal heat generation. In an electrode structure (a heat generation section), a fusible porous film is disposed between a cathode electrode and a cathode-side exterior member, and a fusible porous film is disposed between an anode electrode and an anode-side exterior member. The fusible porous films and may be made of resin having a low melting point and being not soluble in fuel (methanol), or may be made of a combination of a porous film and polyolefin wax with a low melting point. When abnormal heat generation occurs in the fuel cell 1, the fusible porous films and are melted by heat, and pores formed thereto disappear so that a supply of fuel and/or air can be cut off without fail.
    Type: Application
    Filed: October 14, 2009
    Publication date: August 11, 2011
    Applicant: SONY CORPORATION
    Inventors: Kazuaki Fukushima, Tadashi Senoo, Mamoru Hosoya, Jusuke Shimura
  • Patent number: 7255957
    Abstract: A non-aqueous electrolyte cell is provided having improved cell characteristics and which maintains a cell shape encapsulated in a laminate film even when overdischarged to a cell voltage of 0 V. The cell includes an anode, an electrolyte, and a cathode containing a compound having the formula LixFe1-yMyPO4, wherein 0.05?x?1.2 and 0?y?0.8, and wherein M is at least one element selected from the group consisting of Mn, Cr, Co, Cu, Ni, V, Mo, Ti, Zn, Al, Ga, Mg, B and Nb. Exposed portions of an anode current collector and a cathode current collector prevent internal shorting of the cell.
    Type: Grant
    Filed: October 2, 2001
    Date of Patent: August 14, 2007
    Assignee: Sony Corporation
    Inventors: Kimio Takahashi, Mamoru Hosoya, Masami Miyake
  • Publication number: 20070117013
    Abstract: An non-aqueous electrolyte cell having superior electronic conductivity and superior cell characteristics. A cathode active material used for the cell is a composite material of a compound having the formula LixFePO4, where 0<x?1.0, and a carbon material, wherein the specific surface area as found by the Bullnauer Emmet Teller formula is not less than 10.3 m2/g.
    Type: Application
    Filed: November 30, 2006
    Publication date: May 24, 2007
    Applicant: Sony Corporation
    Inventors: Mamoru Hosoya, Kimio Takahashi, Yuzuru Fukushima
  • Publication number: 20060263674
    Abstract: In producing an oxygen reduction catalyst including a nitrogen-containing active carbide by converting either a mixture of a carbonaceous solid raw material (coal-derived binder pitch) and a nitrogen-containing organic compound (melamine or the like) or a nitrogen-containing organic polymer compound (polyacrylonitrile, melamine resin or the like) into a powdery material, baking the powdery material, and subjecting the baked product to steam activation, the presence ratio of nitrogen and the presence ratio of carbon relating to a shake-up process in the surface and the spin density of unpaired electrons showing Curie paramagnetism are controlled to be high, by selection of the baking temperature, the mixing ratio between the carbonaceous solid raw material and the nitrogen-containing organic compound, or the nitrogen-containing organic polymer compound material.
    Type: Application
    Filed: April 16, 2004
    Publication date: November 23, 2006
    Inventors: Mamoru Hosoya, Akinori Kita
  • Patent number: 7122272
    Abstract: A cell in which liquid leakage or destruction may be prevented as the apparent energy density per unit volume of the cell is maintained. The cell uses, as a cathode active material, a compound of an olivinic crystal structure having the formula LixFe1?yMyPO4, where M is at least one selected from the group of Mn, Cr, Co, Cu, Ni, V, Mo, Ti, Zn, Al, Ga, Mg, B and Nb, with 0.05?x?1.2 and 0?y?0.8. By adjusting the amount of the electrolyte solution, the amount of the void in the container is set so as to be not less than 0.14 cc and not more than 0.3 cc per 1 Ah of the cell capacity.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: October 17, 2006
    Assignee: Sony Corporation
    Inventors: Tsuyoshi Okawa, Mamoru Hosoya, Junji Kuyama, Yuzuru Fukushima
  • Patent number: 7101521
    Abstract: A LiFePO4 carbon composite material is to be synthesized in a single phase satisfactorily to prevent the deterioration of the performance of the cathode active material from occurring and achieve superior cell characteristics. In preparing a cathode active material, starting materials for synthesis of a compound represented by the general formula LixFePO4, where 0<x?1, are mixed, milled and a carbon material is added to the resulting mass at an optional time point in the course of mixing, milling and sintering. Li3PO4, Fe3(PO4)2 or its hydrates Fe3(PO4)2.nH2O, where n denotes the number of hydrates, are used as the starting materials for synthesis of LixFePO4. The temperature of a product from said sintering is set to 305° C. or less when said product from said sintering is exposed to atmosphere.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: September 5, 2006
    Assignee: Sony Corporation
    Inventors: Mamoru Hosoya, Kimio Takahashi, Yuzuru Fukushima
  • Patent number: 6991873
    Abstract: A non-aqueous electrolyte cell having high discharge capacity, an improved capacity upkeep ratio and optimum cyclic characteristics. The non-aqueous electrolyte cell has a cell device including a strip-shaped cathode material and a strip-shaped anode material, layered and together via a separator and coiled a plural number of times, a non-aqueous electrolyte solution, and a cell can for accommodating cell device and the non-aqueous electrolyte solution. The cathode employs a cathode active material containing a compound of the olivinic structure represented by the general formula LixFe1-yMyPO4, where M is at least one selected from the group consisting of Mn, Cr, Co, Cu, Ni, V, Mo, Ti, Zn, Al, Ga, Mg, B and Nb, with 0.05?x?1.2 and 0?y?0.8, with the compound being used either singly or in combination with other materials. The ratio of an inner diameter d to an outer diameter D of cell device is selected so that 0.05<d/D<0.5.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: January 31, 2006
    Assignee: Sony Corporation
    Inventors: Hideki Sakai, Yuzuru Fukushima, Junji Kuyama, Mamoru Hosoya
  • Patent number: 6814764
    Abstract: A method for producing a cathode active material having superior cell characteristics through single-phase synthesis of a composite material composed of a compound represented by the general formula LixFe1-yMyPO4 and a carbon material positively and a method for producing a non-aqueous electrolyte cell employing the so produced cathode active material. To this end, the cathode active material is prepared by a step of mixing the starting materials for synthesis of the compound represented by the general formula LixFe1-yMyPO4, a step of milling a mixture obtained by the mixing step, a step of compressing the mixture obtained by the mixing step to a preset density and a step of sintering the mixture obtained by the compressing step. A carbon material is added in any one of the above steps prior to the sintering step. The density of the mixture in the compressing step is set to not less than 1.71 g/cm3 and not larger than 2.45 g/cm3.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: November 9, 2004
    Assignee: Sony Corporation
    Inventors: Mamoru Hosoya, Yuzuru Fukushima, Hideki Sakai, Junji Kuyama
  • Patent number: 6811924
    Abstract: A LiFePO4 carbon composite material is to be synthesized in a single phase satisfactorily to achieve superior cell characteristics. In preparing a cathode active material, a starting material for synthesis of a compound represented by the general formula LixFePO4, where 0<x≦1, is mixed, milled and sintered and a carbon material is added to the resulting mass at an optional time point in the course of mixing, milling and sintering. Li3PO4, Fe3(PO4)2 or its hydrates Fe3(PO4)2.nH2O, where n denotes the number of hydrates, are used as the starting material for synthesis of LixFePO4. The particle size distribution of particles of the starting material for synthesis following the milling with the particle size not less than 3 &mgr;m is set to 2.2% or less in terms of the volumetric integration frequency.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: November 2, 2004
    Assignee: Sony Corporation
    Inventors: Mamoru Hosoya, Kimio Takahashi, Yuzuru Fukushima
  • Patent number: 6797431
    Abstract: A LiFePO4 carbon composite material is to be synthesized in a single phase satisfactorily to achieve superior cell characteristics. In preparing a cathode active material, starting materials for synthesis of a compound represented by the general formula LixFePO4, where 0<x≦1, are mixed, milled and a carbon material is added to the resulting mass at an optional time point in the course of mixing, milling and sintering. Li3PO4, Fe3(PO4)2 or its hydrates Fe3(PO4)2·nH2O, where n denotes the number of hydrates, are used as the starting materials for synthesis of LixFePO4. The the temperature of a product from said sintering is set to 305° C. or less when said product from said sintering is exposed to atmosphere. The oxygen concentration in a sintering atmosphere is set to 1012 ppm in volume or less at the time point of sintering.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: September 28, 2004
    Assignee: Sony Corporation
    Inventors: Mamoru Hosoya, Kimio Takahashi, Yuzuru Fukushima
  • Patent number: 6720113
    Abstract: A solid electrolyte cell in which cell characteristics are not deteriorated even on overdischarge to the cell voltage of 0V, such that the shape of the cell encapsulated in the laminate film is maintained. The cell includes a cathode containing a compound represented by the general formula LixFe1-yMyPO4 where 0.05≦x≦1.2, 0≦y≦0.8, and M is at least one selected from the group consisting of Mn, Cr, Co, Cu, Ni, V, Mo, Ti, Zn, Al, Ga, Mg, B and Nb, an anode and a solid electrolyte. An electrode unit 1 comprised of the cathode and the anode layered together with interposition of the solid electrolyte is encapsulated with a laminate film 2.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: April 13, 2004
    Assignee: Sony Corporation
    Inventors: Shuji Goto, Mamoru Hosoya, Takahiro Endo
  • Patent number: 6656635
    Abstract: A non-aqueous electrolyte secondary cell containing a compound of an olivinic structure as a cathode active material is to be improved in load characteristics and cell capacity. To this end, there is provided a non-aqueous electrolyte secondary cell including a cathode having a layer of a cathode active material containing a compound represented by the general formula LixFe1-yMyPO4, where M is at least one selected from the group consisting of Mn, Cr, Co, Cu, Ni, V, Mo, Ti, Zn, Al, Ga, Mg, B and Nb, with 0.05≦x≦1.2 and 0≦y≦0.8, an anode having a layer of a cathode active material containing the anode active material and a non-aqueous electrolyte, wherein the layer of the cathode active material has a film thickness in a range from 25 to 110 &mgr;m. If a layer of a cathode active material is provided on each surface of a cathode current collector, the sum of the film thicknesses of the layers of the cathode active material ranges between 50 and 220 &mgr;m.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: December 2, 2003
    Assignee: Sony Corporation
    Inventors: Tsuyoshi Okawa, Mamoru Hosoya, Junji Kuyama, Yuzuru Fukushima
  • Publication number: 20030143465
    Abstract: A cell which is not deteriorated in cell characteristics and which maintains a cell shape encapsulated in a laminate film even when overdischarged to a cell voltage of 0V. The cell includes a cathode containing a compound having the formula LixFe1-yMyPO4, where M is at least one selected from the group consisting of Mn, Cr, Co, Cu, Ni, V, Mo, Ti, Zn, Al, Ga, Mg, B and Nb, with 0.05≦x≦1.2 and 0≦y≦0.8, an anode and a solid electrolyte. An electrode member 1 comprised of the cathode and the anode, layered together with the interposition of a solid electrolyte, is encapsulated in a laminate film 2.
    Type: Application
    Filed: October 2, 2001
    Publication date: July 31, 2003
    Inventors: Kimio Takahashi, Mamoru Hosoya, Masami Miyake
  • Publication number: 20020150816
    Abstract: A non-aqueous electrolyte cell having high discharge capacity, an improved capacity upkeep ratio and optimum cyclic characteristics. The non-aqueous electrolyte cell has a cell device including a strip-shaped cathode material and a strip-shaped anode material, layered and together via a separator and coiled a plural number of times, a non-aqueous electrolyte solution, and a cell can for accommodating cell device and the non-aqueous electrolyte solution. The cathode employs a cathode active material containing a compound of the olivinic structure represented by the general formula LixFe1-yMyPO4, where M is at least one selected from the group consisting of Mn, Cr, Co, Cu, Ni, V, Mo, Ti, Zn, Al, Ga, Mg, B and Nb, with 0.05≦x≦1.2 and 0≦y≦0.8, with the compound being used either singly or in combination with other materials. The ratio of an inner diameter d to an outer diameter D of cell device is selected so that 0.05<d/D<0.5.
    Type: Application
    Filed: October 5, 2001
    Publication date: October 17, 2002
    Inventors: Hideki Sakai, Yuzuru Fukushima, Junji Kuyama, Mamoru Hosoya
  • Publication number: 20020124386
    Abstract: A method for producing a cathode active material having superior cell characteristics through single-phase synthesis of a composite material composed of a compound represented by the general formula LixFe1−yMyPO4 and a carbon material positively and a method for producing a non-aqueous electrolyte cell employing the so produced cathode active material. To this end, the cathode active material is prepared by a step of mixing the starting materials for synthesis of the compound represented by the general formula LixFe1−yMyPO4, a step of milling a mixture obtained by the mixing step, a step of compressing the mixture obtained by the mixing step to a preset density and a step of sintering the mixture obtained by the compressing step. A carbon material is added in any one of the above steps prior to the sintering step. The density of the mixture in the compressing step is set to not less than 1.71 g/cm3 and not larger than 2.45 g/cm3.
    Type: Application
    Filed: September 28, 2001
    Publication date: September 12, 2002
    Inventors: Mamoru Hosoya, Yuzuru Fukushima, Hideki Sakai, Junji Kuyama
  • Publication number: 20020122984
    Abstract: A method for producing a cathode active material which produces a spinel type lithium manganese oxide expressed by a general formula: Li1+xMn2−x−yMeyPO4, as the cathode active material, (here, x is expressed by a relation of 0≦x≦0.15 and y is expressed by a relation of 0<y<0.3, and Me is at least one kind of element selected from between Co, Ni, Fe, Cr, Mg and Al). The method comprises a mixing step of mixing raw materials of the spinel type lithium manganese oxide to obtain a precursor; and a sintering step of sintering the precursor obtained in the mixing step to obtain the spinel type lithium manganese oxide. The sintering temperature in the sintering step is located within a range of 800° C. or higher and 900° C. or lower. Accordingly. even when manganese which is inexpensive and abundant in resources is employed as a main material, an excellent cathode performance can be maintained under the environment.
    Type: Application
    Filed: October 19, 2001
    Publication date: September 5, 2002
    Inventors: Hideki Sakai, Yuzuru Fukushima, Kimio Takahashi, Mamoru Hosoya
  • Publication number: 20020114754
    Abstract: An LiFePO4 carbon composite material is to be synthesized in a single phase to realize superior cell characteristics. To this end, in the preparation of a cathode active material, starting materials for synthesis of a compound having the formula LixFePO4, where 0<×≦1, are mixed together, milled and sintered. A carbon material is added at one of these steps. As the starting materials for synthesis for LixFePO4, Li3PO4, Fe3PO4, Fe3(PO4)2 or its hydrate Fe3(PO4)2•nH20), where n is the number of hydrates, are used, and the content of Fe3+ in the total iron in Fe3(PO4)2 or its hydrate Fe3(PO4)2·nH20) is set to 61 wt% or less.
    Type: Application
    Filed: September 24, 2001
    Publication date: August 22, 2002
    Inventors: Mamoru Hosoya, Kimio Takahashi, Yuzuru Fukushima
  • Publication number: 20020106563
    Abstract: A cell in which liquid leakage or destruction may be prevented as the apparent energy density per unit volume of the cell is maintained. The cell uses, as a cathode active material, a compound of an olivinic crystal structure having the formula LixFe1−yMyPO4, where M is at least one selected from the group of Mn, Cr, Co, Cu, Ni, V, Mo, Ti, Zn, Al, Ga, Mg, B and Nb and 0.05≦x≦1.2 and 0≦y≦0.8. By adjusting the amount of the electrolyte solution, the amount of the void in the container is set so as to be not less than 0.14 cc and not more than 3.3 cc per 1 Ah of the cell capacity.
    Type: Application
    Filed: October 5, 2001
    Publication date: August 8, 2002
    Inventors: Tsuyoshi Okawa, Mamoru Hosoya, Junji Kuyama, Yuzuru Fukushima
  • Publication number: 20020106562
    Abstract: A non-aqueous electrolyte cell in which the allowable range of starting material s for synthesis left in a cathode active material is prescribed in order to realize satisfactory cell characteristics. The non-aqueous electrolyte cell includes a cathode containing a cathode active material, an anode containing an anode active material, and a non-aqueous electrolyte, in which the cathode active material is mainly composed of a compound represented by the general formula LixFePO4, where 0<x≦1, with the molar ratio of Li3PO4 to a compound represented by the general formula LixFePO4 to the compound represented by the general formula LixFePO4, which ratio is represented by Li3PO4/LiFePO4, being Li3PO4/LixFePO4≦6.67×10−2.
    Type: Application
    Filed: October 4, 2001
    Publication date: August 8, 2002
    Inventors: Atsushi Sato, Junji Kuyama, Yuzuru Fukushima, Mamoru Hosoya
  • Patent number: RE45833
    Abstract: A non-aqueous electrolyte cell is provided having improved cell characteristics and which maintains a cell shape encapsulated in a laminate film even when overdischarged to a cell voltage of 0 V. The cell includes an anode, an electrolyte, and a cathode containing a compound having the formula LixFe1-yMyPO4, wherein 0.05?x?1.2 and 0?y?0.8, and wherein M is at least one element selected from the group consisting of Mn, Cr, Co, Cu, Ni, V, Mo, Ti, Zn, Al, Ga, Mg, B and Nb. Exposed portions of an anode current collector and a cathode current collector prevent internal shorting of the cell.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: January 5, 2016
    Assignee: SONY CORPORATION
    Inventors: Kimio Takahashi, Mamoru Hosoya, Masami Miyake